At what point is it legal for me to change the locks and start cleaning the place up so I can start to recoup my losses.

If I had a year with minimal expenses I will pay more in December to get the full deduction that year.No legal advice here. 

Legally tenants can not refuse access. 

The Philadelphia Police can legally do nothing. 

The house is a 2-family I own that I was planning on occupying in the spring once the tenants left (through legal owner-occupy channels).

It is not legal to use contracts to circumvent licensing law in FL.

., recourse is as straightforward as enforcing the contract language upon a legal entity.

You should feel relieved that he is going at this stage and that you have two months rent to cover your time to find a good replacement tenant.I would continue to demand the additional months rent according to the legal contract and threaten to take him to court to collect.

Never touch a Historically designated home and if the numbers do not work you walk.I seriously doubt if you are inexperienced in flipping that you will do better than a GC quote assuming your quote is fair and reliable. 

In Oct. 2017, I learned of her new employment and filed wage garnishment toward the judgment/debt.Today, I received a call from tenant's attorney who stated that, "since the tenant filed for chapter 13 bankruptcy in 2015, I could not legally garnish her wages."